Rename postroll_listener to producer.py

Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>
Adding the __init__.py file to make trollduction a package.

Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>
Added a few more info items in dirstalker_sat.py and an example message.

Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>
WIP Producer. Creates images now :)

Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>
Sample xml product list.

Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>
Merge branch 'develop' of github.com:mraspaud/trollduction into develop